lambda表达式操作集合数据

lambda表达式操作集合数据

 //多个数据Stream stream = Stream.of("文泽稳", "朱润", "马军");//数组String[] persons = new String[]{"xueqi", "biyao"};Stream<String> stream1 = Arrays.stream(persons);//集合List<String> list = new ArrayList<>();list.add("少林");list.add("武当");list.add("崆峒");list.add("华山");list.add("青城");list.add("峨眉");Stream stream2 = list.stream();//MapMap<String, Integer> map = new HashMap();map.put("wangqi", 21);map.put("wenzewen", 27);map.put("laowen", 59);Set entries = Set();Stream stream3 = Set().stream();//Stream对象  ----->转换得到指定的对象、//数组Object[] objects =  Array(String[]::new);//字符串String s = llect(Collectors.joining()).toString();System.out.println(